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Hopkins ME, Summers-Ables JE, Clifton SC, Coffman MA.Hopkins ME, et al. Among authors: coffman ma.Health Info Libr J. 2011 Jun;28(2):130-6. doi: 10.1111/j.1471-1842.2010.00921.x. Epub 2010 Dec 3.Health Info Libr J. 2011.PMID: 21564496Free article.